CN102330888A - Light mixing type monochromatic light source with function of fluorescent powder excitation and projection optical engine using same - Google Patents
Light mixing type monochromatic light source with function of fluorescent powder excitation and projection optical engine using same Download PDFInfo
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- CN102330888A CN102330888A CN201010225914XA CN201010225914A CN102330888A CN 102330888 A CN102330888 A CN 102330888A CN 201010225914X A CN201010225914X A CN 201010225914XA CN 201010225914 A CN201010225914 A CN 201010225914A CN 102330888 A CN102330888 A CN 102330888A
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Abstract
A light mixing type monochromatic light source with the function of fluorescent powder excitation function comprises a first pumping light source module for emerging first pumping light, a second pumping light source module for emerging second pumping light, a color combination mirror, a light filter, a fluorescent powder layer and an optical lens, wherein the light filter, the fluorescent powder layer and the optical lens are arranged in sequence. The fluorescent powder layer is used for absorbing the first pumping light and the second pumping light and exciting the fluorescent light whose wavelength is different from that of the first pumping light and that of the second pumping light. A first thin film is coated on the surface of the optical lens facing to the fluorescent powder layer and is used for transmitting the fluorescent light and reflecting the first pumping light and the second pumping light. A second thin film is coated on the surface of the light filter facing to the fluorescent powder layer and is used for transmitting the first pumping light, the second pumping light and reflecting the fluorescent light. The monochromatic light source increases the excitation energy of fluorescent powder in a manner of mixing the two pumping lights, thereby increasing the emergence brightness of the fluorescent light. Compared with the traditional large chip, the light mixing type monochromatic light source has low cost and increases the power of finally-emerged monochromatic light. In addition, the invention also provides a projection optical engine using the light mixing type monochromatic light source.
Description
Technical field
The present invention relates to the light source and the projection display technique that excite based on fluorescent material, relate in particular to monochromatic source that a kind of light-mixed type band fluorescent material excites and the projecting optical engine that uses it.
Background technology
Light source is one of liquid crystal projector important components, and its brightness, light utilization efficiency and caloric value directly have influence on problems such as the power consumption, projector's operation and maintenance cost of quality, the projector of projected image.In the past, most of projectors all adopt ultrahigh pressure mercury lamp (UHP) or Metal halogen lamp as light source, though the brightness of this type light source can meet the demands; But its power consumption high life is short, and light conversion efficiency is lower, and caloric value is big; And can pollute environment, therefore not to be well suited for as projection light source.Nowadays, increasing liquid crystal projector is all brought into use environmental protection, light emitting diode that conversion efficiency is high (Light Emitting Diode is LED) as light source.
As the led light source of demonstration and lighting field, existing low-cost led light source adopts the fluorescence conversion usually, that is, utilize the emission light of predetermined wavelength to come excitated fluorescent powder, produces white light.For example: the white light patent of Japan day inferior (Nichia) company, utilize blue-ray LED to excite yellow YAG fluorescent material to produce white light exactly.Yet, this mode of utilizing single light source to cooperate fluorescent material, the excitation energy of fluorescent material is lower, thereby reduces output brightness.
In order to satisfy the requirement of high brightness and high-output power, adopt modes such as strengthening chip size, raising drive current to improve performance usually.For example: Luminus Devices releases three primary colours (RGB) chipset that aims at miniscope (comprising application such as high brightness pouch-type projector, the intelligent projection display and general illumination) design; Use red LED chips, green LED chip and the blue led chip of individual packages; That every LEDs is is single, high brightness, large scale individual circuit chip, can bear great power and quickflashing.When three kinds of chips incorporate, chipset can produce the white light of high brightness under pulse mode, satisfies the demand of crystal projection etc.Yet chip area is big more, and drive current is high more, and the heat that is produced is also increasing, tends to shorten the service life of light source, and the output of single chip is also limited; In addition, high brightness, large chip LED cost an arm and a leg, and make the cost of manufacture of light source higher, and then cause the cost of crystal projection higher relatively, have limited the development of crystal projection.
Summary of the invention
In view of this, the monochromatic source that the light-mixed type band fluorescent material that must provide a kind of excitation energy of fluorescent material big, brightness is high, cost is low excites, thus the monochromatic power of final outgoing is increased.
In addition, the projecting optical engine that a kind of brightness is high, cost is low, Projection Display is effective also need be provided.
Goal of the invention of the present invention realizes through following technical scheme:
The monochromatic source that a kind of light-mixed type band fluorescent material excites comprises the first pump light source module, and the second pump light source module closes the look mirror, optical filter, optical lens and phosphor powder layer.Wherein, the first pump light source module outgoing, first pump light.The second pump light source module outgoing, second pump light, the peak wavelength of this second pump light is different with the peak wavelength of said first pump light.Close that the look mirror is used to merge said first pump light and second pump light is a branch of pump light.Optical filter is arranged on the said emitting light path that closes the look mirror.Optical lens is arranged on the emitting light path of said optical filter.Phosphor powder layer is arranged between said optical filter and the optical lens, is used to absorb first pump light, second pump light, inspires the fluorescence of wavelength difference and this first pump light, second pump light.Said optical lens is coated with the first film towards the surface of phosphor powder layer, is used for transmission fluorescence, reflects first pump light, second pump light.Said optical filter is coated with second film towards the surface of phosphor powder layer, is used for transmission first pump light, second pump light, reflected fluorescent light.
A kind of projecting optical engine comprises little display floater, projection lens and lighting device.Wherein, little display floater is modulated incident light, and modulates the image light that carries image information.Projection lens is used for the visual information projection on said little display floater is imaged onto screen.Lighting device shines said little display floater.This lighting device comprises the monochromatic source that at least one above-mentioned described light-mixed type band fluorescent material excites.
A kind of projecting optical engine comprises lighting device, DMD, total internal reflection prism and projection lens.Wherein, lighting device is used to provide incident ray, and it comprises the monochromatic source that at least one above-mentioned described light-mixed type band fluorescent material excites.DMD optionally reflects said incident ray to produce image light.Total internal reflection prism is arranged between said lighting device and the DMD, and incident ray is imported said DMD and reflects the image light of said DMD outgoing.Projection lens is used to receive the image light of this DMD institute outgoing, and this image ray cast is become image frame.
Monochromatic source of the present invention, the mixed light mode of the pump light through the outgoing of two kinds of pump light source module institutes increases the excitation energy of fluorescent material; Thereby increase the outgoing brightness of fluorescence; Compare with traditional large chip, cost is low, and the monochromatic power of final outgoing is increased.In addition; Utilize the logical two kinds of opposite films of characteristic of the ripple that is provided with on optical filter, the optical lens; Feasible fluorescence to the scattering of pump light source module obtains utilizing, by the exit facet outgoing of monochromatic source, simultaneously; Avoided being mapped to the exit facet outgoing of the pump light that is not absorbed and used on the phosphor powder layer, improved the light output purity by monochromatic source.And use the projecting optical engine of this monochromatic source, the high light of monochromatic source outgoing brightness that at least one light-mixed type band fluorescent material that excitation energy is big, cost is low excites, the light of different monochromatic source outgoing different colours; Shine little display floater/DMD, afterwards, modulate image light by little display floater/DMD; Output to external screen from projection lens, simple in structure, brightness is high; Production cost is lower, and Projection Display is effective.
Description of drawings
In order to be easy to explanation, the present invention is done to describe in detail by following preferred embodiment and accompanying drawing.
The planar structure sketch map of the monochromatic source that Fig. 1 excites for first embodiment of the invention light-mixed type band fluorescent material.
The planar structure sketch map of the monochromatic source that Fig. 2 excites for second embodiment of the invention light-mixed type band fluorescent material.
The planar structure sketch map of the monochromatic source that Fig. 3 excites for third embodiment of the invention light-mixed type band fluorescent material.
Fig. 4 is the planar structure sketch map of first embodiment of the invention projecting optical engine.
Fig. 5 is the planar structure sketch map of second embodiment of the invention projecting optical engine.
The specific embodiment
The planar structure sketch map of the monochromatic source that excites for first embodiment of the invention light-mixed type band fluorescent material shown in Figure 1; It comprises the first pump light source module, 10, the second pump light source modules 11, closes look mirror 20; Optical filter 30, optical lens 40 and phosphor powder layer 50.
The first pump light source module, 10 outgoing, first pump light, it comprises first luminescence chip 101 and is used to collect the also first light source shaping mirror group 102 of shaping first pump light.The second pump light source module, 11 outgoing, second pump lights (peak wavelength of this second pump light is different with the peak wavelength of first pump light), it comprises second luminescence chip 111 and is used to collect the also secondary light source shaping mirror group 112 of shaping second pump light.In the embodiment of the present invention, first luminescence chip 101, second luminescence chip 111 are light emitting diode (LightEmitting Diode, LED) chip are used to send 180 ° light (light that led chip sent is called pump light) here.The quantity of this led chip can be one, also can be a plurality of for what arrange with array way.Adopt of the arrangement of a plurality of led chips, help improving the luminous flux of whole light source, and then increase brightness with array way.In the specific embodiment, first luminescence chip 101 is a blue-ray LED, sends blue light (first pump light); Second luminescence chip 111 is UV LED, sends UV light (second pump light).And the first light source shaping mirror group 102 and secondary light source shaping mirror group 112 include two tactic positive lens, and its material is a glass, and order is arranged in first luminescence chip 101, second luminescence chip 111 and closes between the look mirror 20.
Close that look mirror 20 is used to merge first pump light and second pump light is a branch of pump light.In the embodiment of the present invention, close look mirror 20 and be dichroscope, be obliquely installed in the intersection of the emitting light path of the first pump light source module 10 and the second pump light source module 11.This dichroscope is that upper surface, the lower surface at plate glass is coated with film respectively; The first pump light source module 10 and the second pump light source module 11 are respectively towards the different surfaces setting of dichroscope; Therefore, the light of dichroscope transmissive preset wavelength, and reflect the light of another preset wavelength.In the specific embodiment, be to pass through to UV light is high, and high anti-blue light.That is, transmission UV light, reflect blue.
Again, optical lens 40 is coated with the first film 401 towards the surface of phosphor powder layer, is used for transmission fluorescence, reflects first pump light, second pump light.Optical filter 30 is coated with second film 301 towards the surface of phosphor powder layer, be used for transmission first pump light, second pump light, reflected fluorescent light.Therefore, phosphor powder layer 50 separates with luminescence chip, utilizes the reflection of 301 pairs of fluorescence of second film, the transmission of 401 pairs of fluorescence of the first film, and feasible fluorescence to the scattering of pump light source module obtains utilizing, by the exit facet outgoing of monochromatic source; In addition, utilize 401 pairs of pumping reflection of lights of the first film, 301 pairs of pumping optical transmissions of second film have avoided being mapped to the exit facet outgoing by monochromatic source of the pump light that is not absorbed and used on the phosphor powder layer 50, improve the light output purity.
In addition, according to the actual needs of light path, can also shaping lens 60 be set closing between look mirror 20 and the optical filter 30, the pump light that is used for involutory look mirror 20 outgoing is done further shaping.In the specific embodiment, this shaping lens 60 is a positive lens.Certainly, in other embodiment of the present invention, this shaping lens 60 also can be omitted.
Therefore, monochromatic source of the present invention, the mixed light mode of the pump light through the outgoing of two kinds of pump light source module institutes; Increase the excitation energy of fluorescent material, thereby increase the outgoing brightness of fluorescence, compare with traditional large chip; Cost is low, and the monochromatic power of final outgoing is increased.In addition; Utilize the logical two kinds of opposite films of characteristic of the ripple that is provided with on optical filter, the optical lens; Feasible fluorescence to the scattering of pump light source module obtains utilizing, by the exit facet outgoing of monochromatic source, simultaneously; Avoided being mapped to the exit facet outgoing of the pump light that is not absorbed and used on the phosphor powder layer, improved the light output purity by monochromatic source.
The planar structure sketch map of the monochromatic source that excites for second embodiment of the invention light-mixed type band fluorescent material shown in Figure 2; The structure of the monochromatic source of this monochromatic source and first embodiment is basic identical; Difference is that the first light source shaping mirror group 102 ' shown in Figure 2, secondary light source shaping mirror group 112 ' include reflective compound parabolic concentrator (Compound Parabolic Concentrator; CPC); Its material is the metal of optical plastic, optical glass or reflecting surface plated film, and its outer cross sectional shape is oval or circular.The light outgoing zone of the central portion of compound parabolic concentrator is convex curved surface, and the perimeter sides reflector space is curved surface, and the central optical incident area then is the concavity curved surface.Therefore, the wide-angle incident light that luminescence chip sends becomes substantially parallel light beam outgoing after the experiences total internal reflection of lateral reflection zone around, and the low-angle incident light that it sends is then assembled through the central portion refraction.
In other embodiment of the present invention, the structure of compound parabolic concentrator is not limited to the structure in the specific embodiment of the invention, and for example: its central incident light district territory also can be the plane.In addition; The first light source shaping mirror group 102 ', secondary light source shaping mirror group 112 ' all can also comprise at least one lens again; Promptly at each compound parabolic concentrator and close between the look mirror 20 ' and all at least one lens can be set again, further light beam carried out shaping and to reduce the angle of divergence of emergent light.
The planar structure sketch map of the monochromatic source that excites for third embodiment of the invention light-mixed type band fluorescent material shown in Figure 3; The structure of the monochromatic source of this monochromatic source and first embodiment is basic identical; Difference is that monochromatic source shown in Figure 3 also comprises the 3rd pump light source module 12 "; its outgoing the 3rd pump light, the peak wavelength of the 3rd pump light is all different with the peak wavelength of first pump light, second pump light.For example: the peak wavelength of first pump light is 370nm, and the peak wavelength of second pump light is 405nm, and the peak wavelength of the 3rd pump light is 455nm.
Say the first light source shaping mirror group 102 in detail " be arranged at first luminescence chip 101 " and X-type color combination lens between, collect first pump light and assemble first pump light and be the suitable required size of X-type color combination lens.Secondary light source shaping mirror group 112 " be arranged at second luminescence chip 111 " and X-type color combination lens between, collect second pump light and assemble second pump light and be the suitable required size of X-type color combination lens.The 3rd light source shaping mirror group 122 " be arranged at the 3rd luminescence chip 121 " and X-type color combination lens between, collect the 3rd pump light and assemble the 3rd pump light and be the suitable required size of X-type color combination lens.Therefore, the first light source shaping mirror group 102 ", secondary light source shaping mirror group 112 " and the 3rd light source shaping mirror group 122 " in the quantity of positive lens can design according to the size of X-type color combination lens.
In other embodiment of the present invention; X-type color combination lens also can adopt four plate pack to synthesize cross shaped head; Certainly; X-type color combination lens also can use prism-like X-type color combination lens (X-cube) to replace, the first pump light source module 10 ", the second pump light source module 11 " and the 3rd pump light source module 12 " then be surrounded on this prism-like X-type color combination lens, repeat no more here.
Shown in Figure 4 is the planar structure sketch map of first embodiment of the invention projecting optical engine.Projecting optical engine comprises lighting device 70, polarizing beam splitter 80, little display floater 90 and projection lens 100.Wherein, the little display floater 90 of lighting device 70 irradiations, it comprises the monochromatic source that the light-mixed type band fluorescent material of at least one above-mentioned arbitrary embodiment excites.
Polarizing beam splitter 80 is arranged on the output light path of lighting device 70; In the embodiment of the present invention; Polarizing beam splitter 80 is the lens type polarizing beam splitter, composes cubic shaped by two triangular prisms, is coated with the polarization spectro rete therebetween on the contact-making surface; Form a polarization light-dividing surface by this polarization spectro rete, this polarization light-dividing surface can convert non-polarized light polarised light into and isolate the S polarised light and the P polarised light.Certainly, polarizing beam splitter 80 also can compose other shape by other prism, is converted into the polarised light outgoing as long as satisfy the non-polarized light of incident.
In other embodiment of the present invention, this polarizing beam splitter 80 also can be replaced by flat polarizing beam splitter.
The quantity of little display floater 90 is one, is arranged at a non-adjacent side of polarizing beam splitter 80 and lighting device, is used for received incident light is modulated, and modulates the image light that carries image information.In the embodiment of the present invention; Little display floater 90 be the reflective type silicon-based liquid crystal panel (Liquid Crystal onSilicon, LCOS), when the light that receives when little display floater 90 is the S polarised light; Through after the modulation of little display floater 90; Then reflect another polarised light P polarised light that carries image information, behind polarizing beam splitter 80 folded optical paths, on this P polarized light transmission to projection lens 100.Projection lens 100 and little display floater 90 opposing parallel settings in the embodiment of the present invention are used for the visual information projection on little display floater 90 is imaged onto screen.
In other embodiment of the present invention; The received polarised light of little display floater 90 ' (shown in the dotted line of Fig. 4) also can be the P polarised light; Through after the modulation of little display floater 90 '; Convert the S polarised light that carries image information into, and, this S polarised light is reflexed on the projection lens 100 by polarizing beam splitter 80 with on its reflected back polarizing beam splitter 80.In other words, a projection lens 100 and little display floater a 90 ' adjacent side that is arranged at polarizing beam splitter 80, that is, projection lens 100 is arranged at respectively on the adjacent two sides of polarizing beam splitter 80 with little display floater 90 '.At this moment, projection lens 100 is to be used to receive and throw the S polarised light that carries image information.
Therefore, the projecting optical engine of this embodiment, the high light of at least one monochromatic source outgoing brightness, the light of different monochromatic source outgoing different colours; The light of various different colours shines little display floater, afterwards together through the polarization separation of polarizing beam splitter; Little display floater modulates image light and gets into polarizing beam splitter once more, outputs to external screen by polarizing beam splitter from projection lens, and is simple in structure; Brightness is high, and production cost is lower, and Projection Display is effective.
Planar structure sketch map for the invention second embodiment projecting optical engine shown in Figure 5.This projecting optical engine comprises lighting device 71, total internal reflection prism 81, DMD (Digital Micro mirrorDevice, DMD) 91 and projection lens 100 '.Wherein, lighting device 71 is used to provide incident ray, and it comprises the monochromatic source that the light-mixed type band fluorescent material of at least one above-mentioned arbitrary embodiment excites.
DMD 91 is arranged on the bang path of this incident ray, is used for optionally the reflecting incident light line to produce image light (image light), that is, be used for receiving and this incident ray of modulation, reflects image light.Total internal reflection prism 81 is arranged between lighting device 71 and the DMD 91, with the image light of incident ray importing digital micro mirror element 91 and 91 outgoing of reflection digital micro mirror element.That is, the incident ray of incident and the image light of outgoing are separated.Projection lens 100 ' is used to receive the image light of 91 outgoing of this DMD, and this image ray cast is become image frame.
Therefore, the projecting optical engine of this embodiment, the high light of monochromatic source outgoing brightness that at least one light-mixed type band fluorescent material that excitation energy is big, cost is low excites; The light of different monochromatic source outgoing different colours through the reflection of total internal reflection prism, gets into DMD together and carries out modulation; Afterwards, DMD modulates image light (image light) and outputs to external screen from projection lens, and is simple in structure; Brightness is high, and production cost is lower, and Projection Display is effective.
The specific embodiment of the above is the preferred embodiments of invention; Be not to limit practical implementation scope of the present invention with this; Scope of the present invention comprises and is not limited to this specific embodiment, and for example, luminescence chip is one or a plurality of LD chips of arranging with array way.Perhaps little display floater be transmissive liquid crystal panel (Liquid Crystal Display, LCD), at this moment; Omit polarizing beam splitter; Transmissive liquid crystal panel is arranged on the emitting light path of lighting device, incident light is modulated, and transmitted the light that carries image information.All shapes according to the present invention, the equivalence variation that structure is done all comprise in protection scope of the present invention.
Claims (16)
1. monochromatic source that light-mixed type band fluorescent material excites comprises:
The first pump light source module, its outgoing first pump light;
The second pump light source module, its outgoing second pump light, the peak wavelength of this second pump light is different with the peak wavelength of said first pump light;
Close the look mirror, being used to merge said first pump light and second pump light is a branch of pump light;
It is characterized in that, also comprise:
Optical filter is arranged on the said emitting light path that closes the look mirror;
Optical lens is arranged on the emitting light path of said optical filter; And
Phosphor powder layer is arranged between said optical filter and the optical lens, is used to absorb first pump light, second pump light, inspires the fluorescence of wavelength difference and this first pump light, second pump light;
Wherein, said optical lens is coated with the first film towards the surface of phosphor powder layer, is used for transmission fluorescence, reflects first pump light, second pump light; Said optical filter is coated with second film towards the surface of phosphor powder layer, is used for transmission first pump light, second pump light, reflected fluorescent light.
2. the monochromatic source that light-mixed type band fluorescent material according to claim 1 excites is characterized in that, the said first pump light source module comprises first luminescence chip and is used to collect the also first light source shaping mirror group of shaping first pump light; The second pump light source module comprises second luminescence chip and is used to collect the also secondary light source shaping mirror group of shaping second pump light.
3. the monochromatic source that light-mixed type band fluorescent material according to claim 2 excites is characterized in that, said first luminescence chip, second luminescence chip are a plurality of led chips of perhaps arranging with array way; The first light source shaping mirror group and secondary light source shaping mirror group include reflective compound parabolic concentrator or at least one tactic lens or its combination.
4. the monochromatic source that light-mixed type band fluorescent material according to claim 3 excites is characterized in that said first luminescence chip is a blue-ray LED, and said second luminescence chip is UV LED, and the wave-length coverage of said fluorescence is 490nm～680nm.
5. the monochromatic source that light-mixed type band fluorescent material according to claim 2 excites is characterized in that, said first luminescence chip, second luminescence chip are a plurality of LD chips of perhaps arranging with array way; The first light source shaping mirror group and secondary light source shaping mirror group include extender lens, are used for the laser beam enlarging bundle that said LD chip is sent is shaped as suitable through the said required size of look mirror of closing.
6. the monochromatic source that light-mixed type band fluorescent material according to claim 1 excites is characterized in that, the said look mirror that closes is a dichroscope, is obliquely installed in the intersection of the emitting light path of the said first pump light source module and the second pump light source module.
7. the monochromatic source that light-mixed type band fluorescent material according to claim 1 excites is characterized in that, said phosphor powder layer is a kind of or its combination in the monochromatic fluorescent material of red, yellow, green, blue.
8. the monochromatic source that light-mixed type band fluorescent material according to claim 1 excites is characterized in that, also comprises shaping lens, is arranged on said closing between look mirror and the optical filter.
9. the monochromatic source that light-mixed type band fluorescent material according to claim 1 excites is characterized in that, also comprises:
The 3rd pump light source module, its outgoing the 3rd pump light, the peak wavelength of the 3rd pump light is all different with the peak wavelength of said first pump light, second pump light;
Said phosphor powder layer absorbs first pump light, second pump light and the 3rd pump light, inspires the fluorescence of wavelength difference and this first pump light, second pump light, the 3rd pump light;
Said the first film reflects first pump light, second pump light, the 3rd pump light; The said second film transmission, first pump light, second pump light, the 3rd pump light.
10. the monochromatic source that light-mixed type band fluorescent material according to claim 9 excites is characterized in that the peak wavelength of said first pump light is 370nm, and the peak wavelength of second pump light is 405nm, and the peak wavelength of the 3rd pump light is 455nm.
11. the monochromatic source that light-mixed type band fluorescent material according to claim 9 excites is characterized in that, the said look mirror that closes is an X-type color combination lens, and being used to merge said first pump light, second pump light and the 3rd pump light is a branch of light; The said first pump light source module, the second pump light source module and the 3rd pump light source module are surrounded on this X-type color combination lens.
12. the monochromatic source that light-mixed type band fluorescent material according to claim 10 excites is characterized in that, said X-type color combination lens is tabular X-type color combination lens or prism-like X-type color combination lens.
13. a projecting optical engine comprises:
Little display floater is modulated incident light, and modulates the image light that carries image information;
Projection lens is used for the visual information projection on said little display floater is imaged onto screen; And
Lighting device shines said little display floater, it is characterized in that, said lighting device comprises that at least one is according to any monochromatic source that described light-mixed type band fluorescent material excites in the claim 1 to 12.
14. projecting optical engine according to claim 13 is characterized in that, said little display floater is LCOS, also is provided with polarizing beam splitter on its input path.
15. projecting optical engine according to claim 13 is characterized in that, said little display floater is LCD.
16. a projecting optical engine comprises:
Lighting device is used to provide incident ray, it is characterized in that, said lighting device comprises a plurality of according to any monochromatic source that described light-mixed type band fluorescent material excites in the claim 1 to 12;
DMD optionally reflects said incident ray to produce image light;
Total internal reflection prism is arranged between said lighting device and the DMD, and incident ray is imported said DMD and reflects the image light of said DMD outgoing; And
Projection lens is used to receive the image light of this DMD institute outgoing, and this image ray cast is become image frame.
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| CN102854734A (en) * | 2012-08-31 | 2013-01-02 | 苏州佳世达光电有限公司 | Light source device and projection device thereof |
| CN103363344A (en) * | 2012-03-26 | 2013-10-23 | 红蝶科技(深圳)有限公司 | Selectable multiple light source illumination device |
| CN104576891A (en) * | 2013-10-28 | 2015-04-29 | 台达电子工业股份有限公司 | Phosphor wheel and white light luminous device |
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| CN105204279A (en) * | 2014-06-23 | 2015-12-30 | 深圳市绎立锐光科技开发有限公司 | Light source system and projection equipment |
| CN105652572A (en) * | 2014-06-23 | 2016-06-08 | 深圳市绎立锐光科技开发有限公司 | Light source system and projection equipment |
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Address after: Cui Jing Road Shenzhen City, Guangdong province 518118 Pingshan New District No. 35 No. 1 Building 6 East Applicant after: Butterfly Technology (Shenzhen) Limited Address before: 518057, Guangdong, Nanshan District hi tech Industrial Park, Shenzhen District North West Road, No. 5, Galaxy Fengyun building, 3 floor Applicant before: Butterfly Technology (Shenzhen) Limited |
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Application publication date: 20120125 |